Muaj ntau qhov kev ua tsis tiav ntawm kev sib hloov tshuab, suav nrog kev tsis sib xws, kev tsis sib xws, kev sib hloov ntawm cov ncej thiab thermal bending, roj zaj duab xis swirl thiab roj zaj duab xis oscillation.
Tsis sib npaug
Unbalance yog qhov ua txhaum ntau tshaj plaws hauv ntau lub tshuab rotating.
Qhov ua rau rotor tsis sib npaug yog ntau yam, xws li cov qauv tsim tsis tsim nyog ntawm rotor, sib txawv ntawm kev ua haujlwm zoo, kev sib dhos yuam kev, cov khoom tsis sib xws, tsis zoo dynamic tshuav precision; hloov ntawm tus txheeb ze txoj hauj lwm ntawm coupling nyob rau hauv lub lag luam; rotor qhov chaw tsis zoo, xws li: kev khiav hauj lwm vim corrosion, hnav, xov xwm tsis sib luag scaling, shedding; rotor los ntawm qaug zog kev nyuaj siab tshwm sim los ntawm lub luag hauj lwm ntawm rotor qhov chaw (xws li impeller, hniav, ib puag ncig siv, nro bar thiab lwm yam) lub zos puas, poob tawm, tsim fragments ya tawm, thiab lwm yam.
Kev tsis ncaj ncees
Rotor misalignment feem ntau yog hais txog qib ntawm qaij lossis offset ntawm axis kab thiab bearing centerline ntawm ob lub rotors uas nyob ib sab.
Rotor misalignment tuaj yeem muab faib ua coupling misalignment thiab bearing misalignment. Coupling misalignment tuaj yeem muab faib ua qhov sib npaug ntawm qhov tsis sib xws, tawm ntawm lub kaum sab xis misalignment thiab kev sib luag ntawm lub kaum sab xis. Parallel misalignment vibrates ntawm ob zaug ntawm rotor zaus. Off-angle misalignment ua rau lub sijhawm dabtsi yog khoov los ntxiv rau kev sib txuas hauv kev sim los txo qhov deflection ntawm qhov nruab nrab ntawm ob lub shafts.
Cov kev taw qhia ntawm lub sij hawm khoov hloov ib zaug rau txhua lub lim tiam ntawm kev sib hloov ntawm ncej, yog li cov misalignment nce lub axial quab yuam ntawm lub rotor thiab ua rau lub rotor vibrate nyob rau hauv axial kev taw qhia. Parallel misalignment yog ib qho ua ke ntawm ob qho xwm txheej saum toj no, ua rau lub rotor vibrate radially thiab axially. Bearing misalignment yeej qhia txog qhov sib txawv ntawm lub rooj zaum ntawm lub rooj zaum thiab ncej qhov chaw.
Bearing misalignment redistributes lub load ntawm tus ncej system. Cov kabmob uas muaj cov loads siab dua tuaj yeem ua rau muaj kev sib haum xeeb siab, cov kabmob nrog cov khoom sib zog yuav ua rau tsis muaj zog, thiab tseem ua rau qhov tseem ceeb ntawm kev hloov pauv ntawm cov ncej.
Ncej dabtsi yog khoov thiab thermal dabtsi yog khoov
Ncej dabtsi yog khoov txhais tau hais tias lub centerline ntawm lub rotor yog nyob rau hauv ib tug tsis ncaj lub xeev. Rotor dabtsi yog khoov tau muab faib ua ob hom kev khoov mus tas li thiab khoov ib ntus.
Rotor mus tas li khoov yog hais txog lub rotor ncej yog mus tas li hneev nti, nws yog vim lub rotor qauv tsis tsim nyog, tsim kev ua yuam kev, cov khoom tsis sib xws, rotor mus sij hawm ntev cia tsis tsim nyog thiab mus tas li khoov deformation, los yog lub xeev kub chaw nres tsheb yog tsis raws sij hawm lub lauj kaub los yog lauj kaub. Tsis tsim nyog, rotor thermal stability tsis zoo, kev ua haujlwm ntev ntawm cov ncej ntuj bending nce thiab lwm yam laj thawj.
Kev khoov ib ntus ntawm lub rotor yog tshwm sim los ntawm kev thauj khoom loj ua ntej ntawm lub rotor, kev ua haujlwm tsis zoo thaum pib ua haujlwm, nrawm nrawm, tsis sib xws thermal deformation ntawm lub rotor ncej, thiab lwm yam.
Kev khoov mus tas li ntawm lub rotor thiab kev khoov ib ntus yog ob hom kev tsis ua haujlwm, tab sis cov txheej txheem tsis ua haujlwm yog tib yam. Txawm hais tias lub rotor yog khoov mus tas li lossis ib ntus khoov, nws yuav tsim kom muaj kev sib hloov vector excitation quab yuam zoo ib yam li qhov xwm txheej loj eccentricity.